Casper/Natrona County International to City Of Colorado Springs Municipal CPR → COS
259 nautical miles (298 statute miles) south on a straight line, true course 161°, about 149° magnetic at the departure end (variation 12E). At 120 knots that is 2 h 12 min at the quickest height in today's winds (39,000 ft, a 2-knot headwind), arriving about 10:16 pm MDT (04:16 UTC), after sunset at the destination. Right now CPR is VFR, wind from the northwest (310°) at 7 knots; COS is VFR, wind from the south-southwest (210°) at 10 knots. For planning, not a briefing: the legal preflight briefing comes from Flight Service (1-800-WX-BRIEF) or the FAA's own tools. Airlines fly this pair: 2 flights in the DOT's last twelve reported months, the route's page.
The route the straight line, the warnings crossed, restrictions, pilot reports and the airports along the way · click a mark for its words
Green, blue, red and purple airport dots are the flying conditions reported there now (VFR, marginal VFR, IFR, low IFR); grey means no report. Red areas are SIGMETs, orange areas AIRMETs, hatched red areas temporary flight restrictions. Map tiles: OpenFreeMap, data © OpenStreetMap contributors.
Warnings the route crosses SIGMETs and AIRMETs whose area the line passes through or comes within 25 nm of
- AIRMET TANGO 1W: low-level wind shear (due to air speed loss or gain of 20 knots or more below 2,000 ft above the ground). Over the first 139 nm of the route.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the whole route.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the whole route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Near the route, 149 nm along the route.
A SIGMET warns of weather hazardous to all aircraft; an AIRMET of weather that matters to small aircraft and to flying without instruments. "From 60 to 180 nm out" is measured along the route from CPR.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- urgent CRJ2 at 7,000 ft, 2 nm northeast, 7:04 pm MDT (01:04 UTC): moderate turbulence, remarks: low-level wind shear dept runway 03 gain/loss unknown. At the departure end, 2 nm northeast of the line.
as filed, and in English
CPR UUA /OV CPR035002/TM 0104/FL070/TP CRJ2/TB CONT MOD TURB/RM LLWS DEPT RY03 GAIN/LOSS UNKN
- Report
- an urgent report filed through CPR
- Where
- 2 nm northeast (035°) of CPR
- Time
- 01:04 UTC
- Height
- at 7,000 ft
- Aircraft
- CRJ2
- Turbulence
- continuous moderate turbulence
- Remarks
- low-level wind shear dept runway 03 gain/loss unknown
- BE9L at 21,000 ft, 32 nm east, 5:22 pm MDT (23:22 UTC): light chop turbulence above 21,000 ft, moderate icing above 21,000 ft, -21 °C, remarks: zdvwc. 40 nm along the route, 32 nm east of the line.
as filed, and in English
DGW UA /OV IIP200020/TM 2322/FL210/TP BE9L/SK BASE 200/TA M21/TB OCNL LGT CHOP 210/IC MOD MIX 210/RM ZDVWC
- Report
- a routine report filed through DGW
- Where
- 20 nm south (200°) of IIP
- Time
- 23:22 UTC
- Height
- at 21,000 ft
- Aircraft
- BE9L
- Sky
- base 20,000 ft
- Temperature
- −21 °C
- Turbulence
- occasional light chop at 21,000 ft
- Icing
- moderate mix at 21,000 ft
- Remarks
- zdvwc
- CRJ2 at 19,000 ft, 20 nm west, 6:47 pm MDT (00:47 UTC): moderate chop turbulence, remarks: ZDVWC-13. 129 nm along the route, 20 nm west of the line.
as filed, and in English
EGE UA /OV RLG010052/TM 0047/FL190/TP CRJ2/TB COSN MOD CHOP/RM ZDVWC-13
- Report
- a routine report filed through EGE
- Where
- 52 nm north (010°) of RLG
- Time
- 00:47 UTC
- Height
- at 19,000 ft
- Aircraft
- CRJ2
- Turbulence
- cosn moderate chop
- Remarks
- ZDVWC-13
- B39M at 32,000 ft, 46 nm west, 5:58 pm MDT (23:58 UTC): moderate chop turbulence, no icing, remarks: moderate mtw a 30-knot loss of airspeed ZDVWC-14. 149 nm along the route, 46 nm west of the line.
as filed, and in English
EEO UA /OV EKR069073/TM 2358/FL320/TP B39M/TB OCNL MOD CHOP/IC NEG/RM MOD MTW +/-30KT ZDVWC-14
- Report
- a routine report filed through EEO
- Where
- 73 nm east (069°) of EKR
- Time
- 23:58 UTC
- Height
- at 32,000 ft
- Aircraft
- B39M
- Turbulence
- occasional moderate chop
- Icing
- none
- Remarks
- moderate mtw a 30-knot loss of airspeed ZDVWC-14
- BCS3 at 24,000 ft, 9 nm northeast, 5:28 pm MDT (23:28 UTC): moderate turbulence from 22,000 ft to 24,000 ft, remarks: during the descent. 159 nm along the route, 9 nm northeast of the line.
as filed, and in English
DEN UA /OV DEN320045/TM 2328/FL240/TP BCS3/TB MOD 240-220/RM DURD
- Report
- a routine report filed through DEN
- Where
- 45 nm northwest (320°) of DEN
- Time
- 23:28 UTC
- Height
- at 24,000 ft
- Aircraft
- BCS3
- Turbulence
- moderate from 24,000 ft to 22,000 ft
- Remarks
- during the descent
- BCS1 at 24,000 ft, 6 nm northwest, 7:30 pm MDT (01:30 UTC): moderate turbulence from 22,000 ft to 24,000 ft, remarks: during the climb ZDVWC-05. 189 nm along the route, 6 nm northwest of the line.
as filed, and in English
DEN UA /OV DVV270030/TM 0130/FL240/TP BCS1/TB MOD 220-240/RM DURC ZDVWC-05
- Report
- a routine report filed through DEN
- Where
- 30 nm west (270°) of DVV
- Time
- 01:30 UTC
- Height
- at 24,000 ft
- Aircraft
- BCS1
- Turbulence
- moderate from 22,000 ft to 24,000 ft
- Remarks
- during the climb ZDVWC-05
- CRJ2 at 9,000 ft, 14 nm west, 6:35 pm MDT (00:35 UTC): light chop turbulence, vmc, remarks: occasional moderate turbulence at at 15,000 ft. At the departure end, 14 nm west of the line.
as filed, and in English
CPR UA /OV CPR215015/TM 0035/FL090/TP CRJ2/WX VMC/TB LGT CHOP/RM OCNL MOD TURB AT 150
- Report
- a routine report filed through CPR
- Where
- 15 nm southwest (215°) of CPR
- Time
- 00:35 UTC
- Height
- at 9,000 ft
- Aircraft
- CRJ2
- Weather
- visual conditions
- Turbulence
- light chop
- Remarks
- occasional moderate turbulence at at 15,000 ft
- C56X at 13,000 ft, 2 nm east, 7:33 pm MDT (01:33 UTC): light chop turbulence, remarks: zdvwc. 100 nm along the route, 2 nm east of the line.
as filed, and in English
LAR UA /OV LAR/TM 0133/FL130/TP C56X/SK BASE160/TB OCNL CONS LGT CHOP/RM ZDVWC
- Report
- a routine report filed through LAR
- Where
- over LAR
- Time
- 01:33 UTC
- Height
- at 13,000 ft
- Aircraft
- C56X
- Sky
- BASE160
- Turbulence
- occasional continuous light chop
- Remarks
- zdvwc
- E75L at 10,000 ft, 27 nm east, 5:45 pm MDT (23:45 UTC): light turbulence up to 17,000 ft, remarks: during the climb. 179 nm along the route, 27 nm east of the line.
as filed, and in English
DEN UA /OV DEN350025/TM 2345/FL100/TP E75L/TB LGT SFC-170/RM DURC
- Report
- a routine report filed through DEN
- Where
- 25 nm north (350°) of DEN
- Time
- 23:45 UTC
- Height
- at 10,000 ft
- Aircraft
- E75L
- Turbulence
- light from the surface to 17,000 ft
- Remarks
- during the climb
- B737 descending, 20 nm east, 7:23 pm MDT (01:23 UTC): no turbulence up to 10,000 ft. 199 nm along the route, 20 nm east of the line.
as filed, and in English
DEN UA /OV DEN/TM 0123/FLDURD/TP B737/TB NEG BLO 100
- Report
- a routine report filed through DEN
- Where
- over DEN
- Time
- 01:23 UTC
- Height
- during the descent
- Aircraft
- B737
- Turbulence
- no below 10,000 ft
- A321 descending, 20 nm east, 6:26 pm MDT (00:26 UTC): no turbulence up to 10,000 ft. 199 nm along the route, 20 nm east of the line.
as filed, and in English
DEN UA /OV DEN/TM 0026/FLDURD/TP A321/TB NEG BLO 100
- Report
- a routine report filed through DEN
- Where
- over DEN
- Time
- 00:26 UTC
- Height
- during the descent
- Aircraft
- A321
- Turbulence
- no below 10,000 ft
- B737 at 6,500 ft, 20 nm east, 5:27 pm MDT (23:27 UTC): no turbulence. 199 nm along the route, 20 nm east of the line.
as filed, and in English
DEN UA /OV DEN/TM 2327/FL065/TP B737/TB NEG TB ON FINAL RWY17R
- Report
- a routine report filed through DEN
- Where
- over DEN
- Time
- 23:27 UTC
- Height
- at 6,500 ft
- Aircraft
- B737
- Turbulence
- no turbulence on final runway 17R
- A320 at 8,000 ft, 49 nm east, 5:42 pm MDT (23:42 UTC): light chop turbulence from 8,000 ft to 16,000 ft, remarks: during the climb. 209 nm along the route, 49 nm east of the line.
as filed, and in English
DEN UA /OV DEN080030/TM 2342/FL080/TP A320/TB LGT CHOP 080-160/RM DURC
- Report
- a routine report filed through DEN
- Where
- 30 nm east (080°) of DEN
- Time
- 23:42 UTC
- Height
- at 8,000 ft
- Aircraft
- A320
- Turbulence
- light chop from 8,000 ft to 16,000 ft
- Remarks
- during the climb
- B737 at 14,000 ft, 14 nm northeast, 6:20 pm MDT (00:20 UTC): light to moderate turbulence, remarks: light to moderate from 14,000 ft to 16,000 ft occn light above 16,000 ft. 229 nm along the route, 14 nm northeast of the line.
as filed, and in English
DEN UA /OV DEN170025/TM 0020/FL140/TP B737/TB LGT-MOD/RM LGT-MOD 140-160 OCCN LGT ABOVE 160
- Report
- a routine report filed through DEN
- Where
- 25 nm south (170°) of DEN
- Time
- 00:20 UTC
- Height
- at 14,000 ft
- Aircraft
- B737
- Turbulence
- light to moderate
- Remarks
- light to moderate from 14,000 ft to 16,000 ft occn light above 16,000 ft
5 more routine reports are on the map.
Winds aloft along the route, and the time en route the forecast for use 20:00–03:00 UTC · at 120 knots true airspeed
The eastbound cruising heights for this course (VFR: odd thousands plus 500 ft; above 18,000 ft the forecast levels), with the wind averaged along the line from the 4 forecast points nearest it (LND, BFF, DEN, PUB). A plus sign is a headwind, a minus sign a tailwind.
| Height | Average wind | Head- or tailwind | Temperature | Ground speed | Time en route | Arrival |
|---|---|---|---|---|---|---|
| 7,500 ft | 180° at 29 kt | +27 kt | 15 °C | 93 kt | 2 h 47 min | 10:51 pm MDT (04:51 UTC) |
| 9,500 ft | 190° at 31 kt | +28 kt | 13 °C | 92 kt | 2 h 49 min | 10:53 pm MDT (04:53 UTC) |
| 11,500 ft | 200° at 33 kt | +25 kt | 7 °C | 95 kt | 2 h 44 min | 10:48 pm MDT (04:48 UTC) |
| 13,500 ft | 210° at 35 kt | +22 kt | 3 °C | 98 kt | 2 h 39 min | 10:43 pm MDT (04:43 UTC) |
| 15,500 ft | 220° at 37 kt | +19 kt | -2 °C | 101 kt | 2 h 34 min | 10:38 pm MDT (04:38 UTC) |
| 17,500 ft | 230° at 40 kt | +16 kt | -7 °C | 104 kt | 2 h 29 min | 10:33 pm MDT (04:33 UTC) |
| 18,000 ft FL180 | 230° at 40 kt | +15 kt | -8 °C | 105 kt | 2 h 28 min | 10:32 pm MDT (04:32 UTC) |
| 24,000 ft FL240 | 230° at 45 kt | +20 kt | -21 °C | 100 kt | 2 h 35 min | 10:39 pm MDT (04:39 UTC) |
| 30,000 ft FL300 | 230° at 51 kt | +18 kt | -33 °C | 102 kt | 2 h 32 min | 10:36 pm MDT (04:36 UTC) |
| 34,000 ft FL340 | 250° at 61 kt | +6 kt | -38 °C | 114 kt | 2 h 16 min | 10:20 pm MDT (04:20 UTC) |
| 39,000 ft FL390 | 250° at 60 kt | +2 kt | -47 °C | 118 kt | 2 h 12 min | 10:16 pm MDT (04:16 UTC) |
Based on data from the 11th at 18:00 UTC; valid on the 12th at 00:00 UTC for use 20:00 to 03:00 UTC; temperatures above 24,000 ft are below zero. Heights are above sea level; a height is left out when the forecast has no wind for it over most of the line (the ground is higher). Ground speed is the airspeed less the headwind; the time en route is for the straight line and ignores climb, descent and routing around weather.
The forecast points as issued
| Point | From | 3,000 | 6,000 | 9,000 | 12,000 | 18,000 | 24,000 | 30,000 | 34,000 | 39,000 |
|---|---|---|---|---|---|---|---|---|---|---|
| LND | used from 0 nm out; 109 nm from the line | 180/33 10° | 190/50 3° | 210/59 -9° | 200/50 -21° | 190/41 -34° | 230/55 -39° | 240/65 -47° | ||
| BFF | used from 50 nm out; 105 nm from the line | 120/24 | 180/31 13° | 210/26 7° | 230/25 -7° | 240/41 -20° | 230/52 -36° | 250/56 -41° | 260/57 -45° | |
| DEN | used from 100 nm out; 77 nm from the line | 190/31 16° | 210/32 7° | 240/41 -8° | 230/47 -21° | 240/56 -32° | 250/65 -37° | 250/61 -47° | ||
| PUB | used from 249 nm out; 37 nm from the line | 210/24 16° | 210/28 8° | 230/43 -8° | 240/42 -21° | 240/77 -30° | 240/72 -36° | 250/51 -47° |
The weather now: both ends and the airports along the way public airports with a weather report within 25 nm of the line, one for each stretch
| Airport | Where | Conditions | Wind | Visibility | Ceiling | Elevation | Reported |
|---|---|---|---|---|---|---|---|
| CPR Casper, WY | departure | VFR Sky: a few clouds at 11,000 feet | from the northwest (310°) at 7 knots | 10+ mi | none | 5,344 ft | 7:53 pm MDT (01:53 UTC) |
| LAR Laramie, WY | 100 nm out, 4 nm east of the line | VFR Sky: scattered clouds at 9,000 feet, a broken layer at 11,000 feet | from the south-southeast (150°) at 18 knots, gusting to 25 | 10+ mi | 11,000 ft | 7,283 ft | 01:53 UTC |
| FNL Fort Collins/Loveland, CO | 159 nm out, 16 nm east of the line, tower | VFR | from the north (350°) at 3 knots | 10+ mi | none | 5,020 ft | 01:56 UTC |
| BJC Denver, CO | 189 nm out, 2 nm east of the line, tower | VFR | from the south-southwest (210°) at 12 knots, gusting to 15 | 10+ mi | none | 5,673 ft | 01:45 UTC |
| COS Colorado Springs, CO | destination | VFR Sky: scattered clouds at 10,000 feet, a broken layer at 17,000 feet, a broken layer at 20,000 feet | from the south-southwest (210°) at 10 knots | 10+ mi | 17,000 ft | 6,187 ft | 7:54 pm MDT (01:54 UTC) |
The highest airport on this list sits at 7,283 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At COS when you get there the forecast at the estimated arrival, 10:16 pm MDT (04:16 UTC)
Wind from the south at 12 knots, visibility more than 6 miles, scattered clouds at 6,000 feet, a broken layer at 20,000 feet VFR
The whole forecast for COS
- From Sun 8:00 pm MDT (02:00 UTC): wind from the west-southwest at 15 knots, gusting to 25, visibility more than 6 miles, a broken layer at 10,000 feet, a broken layer at 20,000 feet
- At times between Sun 8:00 pm MDT (02:00 UTC) and 10:00 pm MDT (04:00 UTC): wind from the west-southwest at 25 knots, gusting to 35, visibility more than 6 miles, a broken layer at 9,000 feet
- From Sun 10:00 pm MDT (04:00 UTC): wind from the south at 12 knots, visibility more than 6 miles, scattered clouds at 6,000 feet, a broken layer at 20,000 feet
- From Mon 6:00 am MDT (12:00 UTC): wind from the north-northeast at 8 knots, visibility more than 6 miles, clear skies
- From Mon 11:00 am MDT (17:00 UTC): wind from the south at 15 knots, gusting to 25, visibility more than 6 miles, scattered clouds at 12,000 feet
The forecast for CPR, the departure
- From Sun 6:00 pm MDT (00:00 UTC): wind from the east-northeast at 12 knots, gusting to 18, visibility more than 6 miles, scattered clouds at 4,000 feet, overcast at 8,000 feet
- At times between Sun 6:00 pm MDT (00:00 UTC) and 10:00 pm MDT (04:00 UTC): visibility 5 miles, light rain, a broken layer at 3,000 feet
- From Sun 10:00 pm MDT (04:00 UTC): wind from the south-southwest at 12 knots, gusting to 22, visibility more than 6 miles, a broken layer at 10,000 feet
- 30% chance between Sun 10:00 pm MDT (04:00 UTC) and 4:00 am MDT (10:00 UTC): visibility 5 miles, light rain, a broken layer at 3,000 feet
- From Mon 12:00 pm MDT (18:00 UTC): wind from the west at 10 knots, visibility more than 6 miles, scattered clouds at 5,000 feet, a broken layer at 15,000 feet
Temporary flight restrictions on the line or within 25 nm of it
- 6/8770 COLORADO SPRINGS, CO, Saturday, October 10, 2026 through Monday, October 12, 2026 UTC 8 nm from the route, at the destination end · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 12 October · ZDV
Daylight
Sunset at CPR 6:28 pm MDT (00:28 UTC), at COS 6:25 pm MDT (00:25 UTC) (civil twilight ends 6:51 pm MDT (00:51 UTC)). At 120 knots the arrival at COS is after sunset there (6:26 pm MDT (00:26 UTC)).
Each restriction opens the FAA's own page with the exact area, heights and times. Ordinary notices to air missions (closed runways, lights out) are not shown: the FAA's notice search is not open to sites like this one at this time.
Radar and forecast charts for the regions crossed government pictures, the latest each time the page loads
Sources: the Aviation Weather Center's data service (SIGMETs, AIRMETs, graphical AIRMETs, pilot reports, winds and temperatures aloft, observations and terminal forecasts), the National Weather Service radar, the Weather Prediction Center's charts, the FAA's temporary flight restriction list and shapes, and the FAA's airport file for the positions, elevations and magnetic variation. Fetched when the page is viewed and kept a few minutes. Each leg is the straight line between its two airports; airways, terrain and airspace are not considered. The airports in detail: Casper/Natrona County International, City Of Colorado Springs Municipal.